Gerhard VI, Count of Holstein-Rendsburg Duke of Schleswig and Count of Holstein-Rendsburg (1367–1404) Parents Ingeborg of Mecklenburg-Schwerin Henry II, Count of Holstein-Rendsburg Children Helvig of Schauenburg Ingeborg of Holstein Adolphus VIII of Holstein Henry IV, Count of Holstein-Rendsburg Gerhard VII, Count of Holstein-Rendsburg Siblings Albert II, Count of Holstein-Segeberg Sophie of Holstein Henry III, Count of Schauenburg-Holstein Metta von Holstein-Rendsburg Partners Catherine Elisabeth of Brunswick-Lüneburg